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3 years ago

What is the answer x^2+28=0

Mathematics

2 answers:

marshall27 [118]3 years ago

5 0

Answer:

the answer is ( there is no real solutions) i hoped this help if you need an explanation why let me know :)

Blababa [14]3 years ago

3 0

Answer:

x = 2√7 or 5.2915

Step-by-step explanation:

x^2 + 28 = 0

first get the variable by itself by subtracting the 28 from both sides. 28-28 cancels and 0-28=-28.

now you have

x^2 = -28

take the square root of x^2 to cancel out the exponent, and then do the same to the other side,

x = √28

x = 2√7 or 5.2915

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Step-by-step explanation:

define the function:

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As both $f(x)$ and x are continuous functions, $g(x)$ will also be continuous.

Now, what can we say about $g(a) = f(a) -a$ ?

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What about $g(b)$ ? Again we have:

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That means that $g(b)$ is not positive.

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